Brake equalizer



Sept. 13, 1938. H. ESPINOSA 2,130,179

BRAKE EQUALIZER Filed April 12, 1937 3 Sheets-Sheet l 1 L 1 w fi 4 4 Inventor fiarzg/isjaz'zzwa,

A iiorneys Sept. 13, 1938. H. ESPINOSA BRAKE EQUALI Z ER Filed April 12, 1937 5 Sheets-Sheet 2 Im Jentor 327 7557122052,

Sept. 13, 1938. H. ESPINOSA 2,130,179

BRAKE EQUALI ZER Filed April 12, 1937 s Sheets-Spam; :5

1 i I k w I I N k I A Inventor l gm - A iiorncys intended. stem members I! being slidably inserted in the 15 Other objects and advantages reside in the detubular member l2. 15

tails of construction and operation as more Within each end of the upper and lower T- Patented Sept. 13, 1938 2,130,179

UNITED STATES PATENT OFFICE BRAKE EQUALIZER Harry Espinosa, North Bergen, N. J.

Application April 12, 1937, Serial No. 136,424

4 Claims. (01. 188204) The present invention relates to brake equalthe housing is formed with aligned openings for izers adapted for use in connection with mepivotally receiving trunnions ll formed interchanical brakes and has for its principal object mediate the ends on the opposite sides of a to provide equal braking pressure on each of the cylindrical tubular member 12, said tubular membrake shoes. her being positioned vertically within the housing A further object is to provide a device of this and having upper and lower T-members l3 and character which may be installed in operative i4 slidably inserted in the upper and lower ends position upon the automobile without necessiof the tubular member, respectively. tating any material changes in the construction Each of the T-members l3 and [4 includes or operation thereof, which at the same time is tubular cross-heads |5-l5 having lateral open- 10 efficient and reliable in operation, relatively inings 16 within which the stem portions H of expensive to manufacture and otherwise well the T-members extend for pivotal connection to adapted for the purpose of which the same is the cross-heads by pins 18, the free ends of the fully hereinafter described and claimed, refermembers l3 and M are slidably positioned pins ence being had to the accompanying drawings s hav g on nd p j ct outwardly from the forming part hereof, wherein like numerals refer cross-heads and pivotally Connected to Yokes 20 to like parts throughout and in which:- 20-40 which embrace the reduced ends 2| of 20 Figure 1 is a top plan view of the housing for cranks 22 in a manner as will be clearly apparent the equalizing mechanism. from an inspection of Figures 3 and 6 of the Figure 2 is a sectional view taken substantially drawings. on a line 2-2 of Figure 1. The cranks 22 connected to the lower T-mem- Figure 3 is a sectional view taken substantially her !4 are secured to the squared ends 23 of a 25 on a line 3--3 of Figure 1; pair of rock shafts 24 extending oppositely Figure 4 is a sectional view taken substantially ro the de Walls Of the casing 5 a d o on a line 44 of Figure 3. ably supported within tubular rock shafts 25 Figure 5 is a fragmentary sectional view taken lollrneled in the Walls O the hOllSiIlg- T e inner substantially on a line 55 of Figure 3. ends of the tubular rock shafts 25 have the 30 Figure 6 is a, side elevational iew of one of cranks 22 attached thereto for connection With the crank arm connecting members. the upper T-member I3. The outer ends of the Figure '7 is a, perspective iew of the tubular rock shafts 24 and 25 have arms 26 and 21 atconnecting member between the pedal actuating tae ed respectively thereto d to which the rod and the pair of T-members forming the front and rear brake rods are connected for the 35 connection with the crank arm. operation of the brakes.

Figures 8 and 9 are perspective views of the p n pp c of the brake pedal n a outer and inner members respectively forming manner to apply the brakes, the rod or frame 6 one pair of rock shafts. will be moved in a forward direction thus exerting 40 Referring now to the drawings in detail, wherea forward pull on the tubular member I2 which 40 in for the purpose of illustration I have disin turn forces the upper and lower T-members closed a preferred embodiment of the invention forwardly t apply th pressure t th cranks 22 the numeral 5 designates a substantially rectanat each end f the heads pg f the T members gular housing secured in a suitable pos1t1on It will be apparent fr the foregoing that berteath the floor of an automobne and through universal pivotal connection is provided between 45 which a frame member 6 extends for horizontal the brake pedal operating rod or frame 6 and 3:1 i agi g fii f mig g fifg g the cranks 22 to which the rock shafts 24 and 25 are attached whereby to compensate for unequal pivotal connection with a foot pedal 8, the oppo- Site end of the frame member having shoulders resistance of the respective brakes and thus en-. 50

9 forming abutments for expansible coil springs able the pressure exerted upon the foot pedal to ill interposed between the shoulders and the be evenly and equally applied to the brakes- The adjacent Side of t casing t normally m. sliding action between the tubular member I2, tain the brake pedal in a brake releasing position. the T- e he s l3 and I4 and between the T- The portion of the frame 6 positioned within members and the cranks 22 enable variations in 55 the throw of the various cranks to permit this equalizing action.

It is believed the details of construction and operation of the device will be readily understood from the foregoing without further detail explanation thereof.

Having thus described the invention what I claim is:

1. A brake equalizer comprising a housing, rock shafts journaled in opposite sides of the housing and projecting therefrom, each of said shafts including a pair of co-axial independently rotatable shaft members, front and rear brake rods connected to the outer ends of the shafts, a pedal actuated member extending from the housing, crank arms attached to the inner ends of the shafts, a tubular member pivotally connected to the pedal actuated member and positioned transversely thereof, T-members slidable in the ends of the tubular member, said T-members including pivoted tubular heads, pins slid.- able in the ends of the heads and yokes pivotally connecting the outer ends of the pins to the respective cranks.

2. A brake equalizer comprising a housing, rock shafts journaled in opposite sides of the housing and projecting therefrom, each of said shafts including a pair of co-axial independently rotatable shaft members, front and rear brake rods connected to the outer ends of the shafts, a pedal actuated member extending from the housing, crank arms attached to the inner ends of the shafts and means operatively connecting the pedal actuated member to said crank arms for oppositely actuating the associated shaft members, said means providing a universal pivoted connection between the cranks and the pedal actuating member, said means including inter-engaging members having relative sliding movement and providing a universal pivoted connection between the cranks and the pedal actuated member.

3. A foot-pedal controlled brake equalizing structure of the class described comprising a. housing, a plurality of crank shafts journaled for oscillation in hearings in opposed walls of said housing, the crank arms on said shafts being confined for operation within the limits of said housing, operating members on the outer ends of said shafts adapted for operative connection with front and rear brake rods, a frame member slidably mounted in said housing, a brake pedal operatively connected with said frame member, a tubular member swingably supported on said frame member and located in said housing, and self-adapting. operating connections between said tubular member and crank arms whereby to provide for simultaneous equalized operation of said crank shafts.

4. A brake equalizing device of the class described comprising a housing provided in opposed walls with bearings, opposed pairs of co-axial independently rotatable shaft members mounted for oscillation in said bearings, said shaft members extending into the housing and being provided with opposed sets of crank arms, independent rocker members on the outer ends of said shaft members for cooperation with front and rear brake rods, a pedal controlled frame slidably mounted in said housing, connecting and operating members between the respective sets of crank arms, and self-adapting operating connections between said last named members and said frame. I

HARRY ESPINOSA. 

